VLPERROR(3dm) VLPERROR(3dm)
NAME
vlPerror, vlStrError, vlGetErrno, vlErrno - VL error routines
SYNOPSIS
#include <dmedia/vl.h>
void vlPerror(const char *str);
char *vlStrError(int errnum);
int vlGetErrno(void);
int vlErrno;
PARAMETERS
str String to be prefixed before error message.
errnum VL error number.
DESCRIPTION
vlPerror takes a pointer to a character array containing message to be
printed along with the message associated with the error number in
vlPerror and prints both on stderr.
vlStrError takes a value representing the error number and returns the
string representing the VL error number specified.
vlGetErrno returns the per-process VL error number for the calling
thread. The internal setting and public retrieval of the VL error value
is guaranteed to be thread-safe.
vlErrno is a global variable set in the library when an error has
occured. This should not be directly accessed, instead use the vlGetErrno
call. This variable is maintained for compatibility only. Unlike the
values returned by vlGetErrno, vlErrno is not a per-thread value.
RETURN VALUE
vlStrError returns a pointer to a character array representing the
description of the VL error number specified.
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